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The Solarbotics Solar Marble Machine

Product Code: KMMS
Excl. VAT: £31.20 Incl. VAT: £37.44
You will earn 31 Robo Points for buying this product

Balls ride up, balls roll down, powered by Solar Engine technology for use even indoors!

Solarbotics, have added a solar cell with a smart circuit to this clever marble machine. The circuit takes the light from the solar cell, stores it and releases it in a pulse, making the gear wheel move, which eventually drops the marble down the spiral. In sunlight, the motor will pulse every few seconds, and  drop a ball every minute. In indoor light, motor pulses will drop to every few minutes (be patient)! if you are not, then you can use the hand crank and see the marble drop.

The kit contains all the parts to build your own Marble Machine, except for tools: you will need a soldering iron, Philips #1 screwdriver and a tiny bit of glue. The wooden parts come in handy panels with additional instructions.


  • 3-ply birch construction
  • Easy to build, with engraved building notes
  • Solar-powered or hand-crank operation
  • Operates in indoor light!
  • 3/8" steel balls for rolling

Each kit includes:
1 x Set of wooden parts.
1 x  GM9 motor
2 x #4x½" screws
7 x ⅜" Balls
1 x 4700μF capacitor
1 x Diode
1 x PN222A transistor
1 x 381L trigger
1 x 6.8μF capacitor
1 x 2-conductor wire
1 x Double-sided sticky tape

Whenever possible, items which are in stock are dispatched the same day, or the next working day.

Large and/or heavy items are dispatched by UPS courier service and these orders must be placed before 15:00hrs (GMT) to ensure same day dispatch.

Small items are normally sent using a Royal Mail service for UK orders, and International Airmail or UPS for overseas orders

Returns Policy

The Solarbotics Solar Marble Machine



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